【单选题】除专门测量高压的仪表外,其他仪表均不得直接测量高压。测量用的连接电流回路的导线截面积要与被测回路的电流相适应;连接电压回路的导线截面积不得小于 ( ) mm2。
【单选题】An economic profit of zero implies:
B.
the firm is covering both explicit and implicit costs.
C.
the firm's revenues are sufficient to compensate the money and time that the owners put into the business.
【多选题】习近平总书记在十九大报告中指出:“青年兴则国家兴,青年强则国家强。青年一代有理想、有本领、有担当,国家就有前途.民族就有希望。中国梦是历史的、现实的,也是未来的;是我们这一代的,更是青年一代的。中华民族伟大复兴的中国梦终将在一代代青年的接力奋斗中变为现实。全党要关心和爱护青年,为他们实现人生出彩搭建舞台。广大青年要坚定理想信念,志存高远,脚踏实地,勇做时代的弄潮儿,在实现中国梦的生动实践中放飞青春...
A.
为“三百六十行,行行出状元”创造了吏有利的外部环境
【单选题】When marginal profit equals zero:
A.
the firm can increase profits by increasing output.
B.
the firm can increase profits by decreasing output.
C.
marginal revenue equals average revenue.
【单选题】布置基础构件时,需要将一层的()构件复制到基础层。
【简答题】长期零经济利润条件(long-run zero-profit condition)
【单选题】When a profit-maximizing firm in a competitive market has zero economic profit, accounting profit
A.
is negative (accounting losses).
D.
could be positive, negative or zero.